What is "yashlatz"

Yashlatz - Yeshivat Yerushalayim L’Tzeirim (in Hebrew - Jerusalem Yeshiva for teenagers) - is a National Religious Yeshiva High School in Jerusalem, Israel. It was founded in 1964 by Rabbi Yaakov Filber, one of the foremost students of Rav Tzvi Yehuda HaCohen Kook, to serve as institution of choice for teenage boys of the Merkaz Harav community. Yashlatz is considered to be one of the leading Yeshiva High Schools in Israel, both in its religious and educational standards; and it serves as the institution of choice for teenage boys of the Merkaz Harav community. It became a flagship institution, and now has an enrollment of approximately 300 students.